Home / 28,491.94-39,315.48-15,744.35

Finding the Fourth Proportional to 28,491.94, 39,315.48 and 15,744.35

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Solution

The fourth proportional to 28,491.94, 39,315.48 and 15,744.35 is: 21,725.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,491.94 : 39,315.48 = 15,744.35 : x
  2. Step 2: Convert to fraction form
    28,491.94/39,315.48 = 15,744.35/x
  3. Step 3: Cross multiply
    28,491.94x = 39,315.48 × 15,744.35
  4. Step 4: Simplify right side
    28,491.94x = 618,996,705.84
  5. Step 5: Solve for x
    x = 618,996,705.84/28,491.94
  6. Step 6: Final answer
    x = 21,725.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.